James Dottin is a geochemist who focuses on measuring and evaluating the causes of sulfur isotope variations in Ocean Island Basalts (OIBs), Martian meteorites, pallasite meteorites, lunar basalts, and lunar soils.  Dottin's overall goal of his research is to understand how sulfur is processed on various solar system bodies through constraints on the dynamic interplay between sulfur and other volatiles that are cycled through planetary atmospheres, crustal components, and planetary interiors.  During his time at EPL as a Nation Science Foundation Postdoctoral Fellow, Dottin will be working with Staff Scientit, Dr. Steve Shirey and EPL Director, Dr. Mike Walter to trace the potential global distribution and interaction of recycled protoliths in HIMU mantle reservoirs through sulfur isotope measurements of key HIMU basalts and sulfide inclusions in superdeep diamonds.